Type-writer platen.



c. w. BAHNABY.

TYPE WRITER PLATEN. APPLICATION FILED MAY 51 T916- 1,226,626. Patented May 22, 1917.

INVEN OR. M w. /ww

A TTORNEYS.

cnARLEs w. BARNABY, on NEW YORK, N. Y.

TYPE-WRITER PLA'IEN.

Specification of Letters Patent.

Patented May 22, 191 '7.

' Continuation in part of application Serial No. 791,335, filed September 23, 1913. This application filed May 5, 1916. Serial No. 95,612.

To-all whom it may concern:

' Be it known that I, CHARLES W. BARNABY, a citizen of the United States, and a resident of the borough of Richmond, countyof Richmond, city and State'of New York, have invented certain new and useful Improvements in Type-Writer Platens, of which the following is a specification.

a filed September 23, 1913.

My invention relates to means for mounting typewriter platens in their carriages and its primary object is to provide a platen of improved construction which does not limit the width of the sheet upon which the writing-is to be recorded. Another object is to provide improved line-spacing mechanism for typewriter platens of this character. A

further object is to reduce the length of' space occupied by the platen and its mountings below what is required for thoseof the usual construction. Other and further objects will appear in the specification and be pointed out in the claims, reference being bad to the accompanying drawings, which exemplify my invention in its adaptation to a typewriter similar 'to that shown in my application for patent on type-writing-machines, Serial Number 667,537, filed December 23, 191 1. The present application constitutes in part a divisional application of mycopending application Ser. No. 791,335,

Figure 1 is a front elevation of the typewriter carriage, shown but not claimed in my copending application Serial No. 791,335;

Fig. 2 is an end elevation of. the same taken from the right of Fig. 1, with the hand grip removed;

Fig. 3 is a vertical, longitudinal section of another embodiment of my invention xviewed from the front; a

Fig. at is an end view and part section of Fig. 3 viewed from the right;

Fig. 5 is a front elevation of a further embodiment'of my invention, partly broken away at the left end;

Fig. 6 is an end elevation of Fig. 5 viewed from theright and partly broken away Fig. 7 is a vertical, horizontal'section of still another embodiment of my invention viewed from the front;

Fig. 8 is an end view, partlylin, of

Fig. 7, viewed from the right.

Generally stated, my invention consists of an open end platen and a plurality of rollers mounted in a carriage in such a manner as to provide for the passage of various thick comprises a plurality of longitudinal membars 1 and-2 and a pair of laterally spaced end frames 3 which are rigidly secured to said longitudinal members. In Figs. 3 to 8 inclusive,-another longitudinal member 15 is included in the carriage frame. Member 15 partly encircles the platen and is carried up at the right end 16 to partly inclose the end of the platen. The member 1 is provided with a roller 4 journaled on the screw -5. A rack bar 6 is also rigidly secured to the ends of the end frames 3 and constitutes one of the longitudinal members of the carriage frame. J ournaled within the end frames 3, or in flexing arms pivoted within said end frames are a plurality of rollers 7 and 8, the

former being disposed to the rear and the latter to the front of a platen 9. The sheet to be written upon passes between the periphery of the platen and rollers 7 and 8 and is still further held in contact with the platen by means of spring clips 31, .or by means of spring members 13, according to Figs. 5 and 6, said members being providedat their upper ends with pins 12 upon which are ivoted rollers 11 which, contact with the s eet operated upon.

In the embodiment of my invention shown in Figs. 1 and 2, the rollers 7 and 8 are pivoted in fixed bearings in the end frames 3.

The right hand end frame 3 is provided with a standard 28 provided with an opening to receive the platen axle 27. The platen 9 havingno pivot at its left hand end is dependent for its alinement upon the rollers 7 and 8 upon which it rests, being held in I contact with said rollers by its weight and exerted by the spring clips 31.

also by means of the pressure upon its top I prefer to give the platen axis 27 sufficient freedom in its opening in standard 28 to prevent it from coming in contact with the same under usual operating conditions. This makes the alinement of the platen entirely dependent upon its contact with the rollers 7 and 8 and when sheets. of paper are passed between the platen and rollers, the freedom of motion allowed about the pivot 27 allows the platen to'rise slightly more or less to accommodate the thickness of the sheets inserted. The rolls 10, 'ng pivoted in fixed bearings, will obviously maintain the platen axis in its same parallel relationto the carriage. The paper may be fed by means of V I the hand grip 30, or by means of some usual form of line spacing lever provided with a pawl to engage the teeth of ratchet wheel 29. It is obvious that in this application of my invention, the sheet passed around the platen cannot extend farther toward the right hand of the carriage than the left face of the ratchet wheel or of the line spacing lever and pawl operating it. The attachments of the platen and carriage wouldtherefore extend beyond the right hand edge of the sheet by the amount of space taken up by the line spacing lever and attachments, ratchet wheel 29, axle pivot 27 and hand grip 30. The lefthand of the carriage be- 1ng open the sheet may extend any required amount beyond theleft hand end of platen 9.

When, as in thecase of portable machines, a minimum space is desirable beyond what is necessary for the actual working length of the platen, I prefer to employ one of the applications of my invention exemplified in Figs. 3 to 8 inclusive.

Referring to Figs. 3 and 4, carriage frame 15 is closed at one end by the wall 16 (shown better in Fi s. 5 and 6 which are similar in this respect ,and fromthis wall 16, there extends a portion 17 within the end of platen 9. This extension-17 carries a hub 18 which carries the line spacing lever 32 and it also receives the sleeve 21 Which-acts as a pivot for the platen, being attached to disk 20 which in turn is secured to the inner circumference of the platen body. fThe line spacinglever 32 carries a pawl 33" which engages ratchet teeth 10 cut into the inner circumference of the-platen body. The top of wall 16 and inner extension 17 is cut away to a suflicient extent to allow room for the line spacing lever 32 which latter may. therefore be of thesame thickness at its outer end and placed in the same plane as the face'of wall 16. When the line spacing lever is in its normal position as shown, lug 61 of lever 32 (shown partly broken away),strikes the upper edge of 17 forming a stop for said.

lever. The tail 35of pawl 33 also strikes the upper edge of 17 and throws the pawl out of engagement with the ratchet teeth 10 which permits the platen to be rotated in either direction by means of the hand grip 25. When the outer end of the line spacing lever is pressed upward, the pressure on tall 35 is removed and the pawl is thrown mto engagement by the action of the pawl spring ward until it is stopped by the stop lug 38 which will occur when the platen has rotated to the extent of one ratchet tooth. Lug 38 is attached to a member 57 passing around the inside of 17. Member 57 is pro- '37. The line spacing lever is thrown upposition 32', Fig. 8, which will rotate the platen to the extent of two ratchet teeth and when the lever is thrown back to normal position 32, lug 61 and tail 35 will strike the edge'of 17 as before and the pawl again will be thrown out of engagement, as shown by the dotted position of pawl, Fig. 8.

Referring to Figs. 3 and 4, member'57 is slotted to make room for spring 58 which is secured to 17 by screw 60. Loop 59 at the free end of the spring passes through an opening provided in 17, and acts as a dog to engage the ratchet teeth for locating the platen in the proper line space position.

The hand grip, 25 is attached to shaft 24 which is provided with a pin 26 which engages the walls of -a slot 22 in sleeve 21, whereby any rotative motion applied to 25 is transmitted to the platen. When not in use, hand grip 25 may be pushed into the dotted position, flush with the faces of 16 and 32, which reduces the device to a minimum space when the typewriting machine is placed in its case. Nut 23 performs triple service: first, it retains the platen pivot sleeve in its proper relation to its bearing in 17, second, it retains lever 32 in its proper place, and third, acts as a stop for pin26 when hand grip 25 is drawn out into working position.

In this case, Figs. 3 and 4, the platen pivot 21 may fit snugly in its bearing in 17 In r this case roller 8 is pivoted at each end in a of the shafts 42 and 44, properly support and locate the left hand end of the platen. When a sheet of paper is passed around the platen, the rollers 7 and 8 are merely swung out slightly farther from the platen, the platen remaining in the same position as before. If it is desired "to have the two rollers act in unison, an arm 46 may be at tached to each shaft and connected together by the link 45, as indicated by the dotted lines, Fig.- 4. a

Referring'to Figs. 5 and, 6, the application of my invention as here shown is practically the same as in the preceding case, with the exception that there is only one through shaft 42 to which the two levers 41 are-securely attached. Each of the levers 41 is provided with a second arm 46 which is connected by two links 45 with the two levers 47. The two levers 47 are connected independently to an end frame 3 at each end of the carriage, but the two levers 47, in which roller 7 is pivoted, are compelled to move in unison with each other and also with respect to levers 41 through their connection with these leversby means of the links 45. The action is therefore similar to that of the preceding case.

Referring to Figs. 7 and 8, the application of my invention here shown is similar in many respects to Figs. 3, 4, 5 and 6, the line spacing mechanism is substantially similar and the carriage in general is substantially similar. The carriage frame 15, 16, and 17 is the same with the exception that the hub is different, having a long extension 19 which supports the left hand end of the carriage. The left hand end of the platen is provided with a sleeve pivot 52 which has a bearing in the end of the extended hub 19. A member 53 has a hook extension which passes through an opening in the end of the platen and engages a flange in the outer end of hub extension 19 to prevent'the platen from moving off of its bearings toward the left.- The other end of said platen is pivoted on hub 19 by means of disk 51. The stem 24 of hand grip 25 has a groove 54 in its left hand end to engage a pin" 55 secured in the pivot sleeve 52. The head of screw 56 screwed into the end of stem 24' engages pin 55 to prevent hand grip 25 from being drawn out beyond the proper working distance.

As the hand grip 25 is adjustable to a point within the plane of wall 16, and as there is no obstruction at the right hand of the platen and sheet of paper which itcarries until thy'strike wall 16, it is obvious that the platen carriageand mountings only need be about thethickness of wall 16 beyond therequiredlength of the platen.

As the platen is pivoted at both ends and,

its proper alinement thereby assured, I prefer in this case to use elastically hung rollers,

scribed, the combination of a platen provided with a journal on one end, said platen being open at its other end, and means for rotatably supporting the open. end of said platen.

2. In a machine. of the character described, the combination ofa platen provided with a journal on one end, said platen being open at its other end, and means for rotatably supporting the open end of said platen, said means comprising rollers journaled on fixe axes and in peripheral contact with said platen.

3. In a machine of the character described, the combination with a carriage .provided with a bracket at one end,of a

platen journaled atone end in said bracket, said platen being openat its other end, and paper holding means for rotatably supporting the open end of said platen.

4. In a machine of the character described, the combination with a carriage provided with a bracket at one end, of a platen journaled at one end in said bracket, said platen being open at its other end, and paper holding means for rotatably supporting the open end of said platen, the journal of said platen having play within its bearthe closed end of said carriage for journaling the other end of said platen.

7. In a machine of the character described, a platen, a carriage therefor open at oneend and closed at the other, said platen having one end journaled in the closed end of said carriage, and means supported from the closed end of said carriage for journaling the other end of said platen, said means extending yvithin said platen.

.Sa'iIn'a machine of the character described, a carriage open at one end and closed at the other, the closed end of said carriage being rovided with an elongated bearing extendmg to a point adjacent to the other end of said carriage, and a platen journaled in said elongated bearing.

9. In a machine of the character described, a carriage, a platen journaled thereon, said platen being provided with a recessed end sald platen,

wall and said carriage being provided with a bearing ofiset. into said recess, line-spacing means mounted within said recess 1n the end wall of the platen, and means for rotatably supporting the other end of said platen.

10. In a machine of the character described, a carriage, a platen journaled thereon, said platen being provided with a re- 4 cessed end wall and said carriage being provided with a bearing ofiset into said recess, line-spacing means mounted withln sald re cess in theend wall of the platen, and means for rotatably supporting the other endof said platen,

I I o a ing circumferential wall of sa1d platen, r a ratchet pawlcoiiperatmg therewith.

said line-spacing mechanism including an annular ratchet on the overhangand 11. In a machine of the character described, a carriage, a platen journaled there on, said platen. being .provlded with a 'recessed end wall and said carriage beingpro- I- vided with abearing oflset into said recess,

' ing circumferential j as .' I scribed, a carriage open at one end and closed at the other, the closed end thereof bei 'f ing deflected inwardly, and carrying abear dine-spacing means mounted within said recess in the end wall of the platen, and means for rotatably supporting the other end of V i said line-spacing mechanism in eluding an annular ratchet on the overhangwall of said platen, and a ratchet pawl cooperating therewith, said pawl being journaled on said bearing.

12. In a machine of the character deing, a platen journaled in said bear ng, said platen having an open end extendlng over and around the inwardly deflected end wall of said carriage, ratchet line-spacing mecha- 'nism within said open end of the platen, and yieldable means interengaging between the deflected end wall of said carriage and the "end of said platen to retain the platen in prev the deflected end wall;of said carriage and the end of said platen to retain the platen in predetermined line-spacing location, said yieldable means being mounted on the inner wall of the inwardly deflected end wallof said carriage and extending through an opening in said end wall.

14. In a machine of the character described, a carriage 0 en at one end and closed at the other, the c osed end thereof being deflected inwardly,ar 1d carrying a bearing, '65

a platen journaled; in, said bearing, said platen having an open end extending over and around the inwardly deflected end wall of said carriage, ratchet line-spacing mechanism within said open end f the platen, and yieldable means intere'ngagin'g between the deflected end wall of said carriage and the end of said platen to retain the platen in predetermined line-spacing location, said yieldable means being mounted on the inner wall of the inwardly deflected end wall of.

said carriage and extending through an openmg in said end wall, said yieldable means comprising a leaf spring mounted on the inner circumferential wall. of the inwardly deflected wall of said carriage extending through an opening in said end wall and engaging a part rigidly mounted on the inner circumferential wall of said platen.

15. In a machine of the character described, a carriage having an inwardly deflected portion at one end, a platen extendmgover and around said inwardly deflected port on and having one end journaled there- In, line-spacing mechanism mounted within the end of said platen, a line-spacing lever extending outwardly from said mechanism but inside the plane of the end of said carriage.

16. In a machine of the character descrlbed, a carriage, a platen, rollers peripherally supporting and centering said platen, and a rigid element movable about an axis parallel to the axis of said platen and carrying one of said rollers.

17. In a machine of the character descrlbed, a carriage, a platen, rollers peripherally supporting said platen, and rigid elements for carrying said rollers, said ele ments being movable about axes'parallel to the axis of said platen, said elements being connected by a link to constrain them to unison 1n movement.

.18. In a machine of the character de-.

scribed, a carriage, a platen, rollers peripherally supporting said platen, and rigid 'ele-' ments for carrying said rollers, said elements-being movable about axes parallel to the axis of said platen, one of said rollers being suitably connected to another of said rollers to produce parallelism in the move ment of said rollers. I

19. In a machine of the character fdescribed, the combination with a platen, of

a carriage within which said platen is journaled and atelescopic handle movable into and out of a'position between the end planes of saidcarriage.

20. In a machine of the character described, a carriage, a platen rotatable about an axis, rollers peripherally supporting and centering said platen, andmeans for mounting said rollers to-swing about axes parallel to the axis of said platen.

21. In a machine of the character des to produce lever scribed, a carriage, a platen rotatable about an axis, rollers peripherally supporting and centering said platen, and means for swingin said rollers about axes parallel to the axis of said platen, one of said rollers being suitably connected to another of said rollers parallelism in the movement of said rollers. j

23. In a machine of the character described, the combination with a carriage, of a platen suitably connected at one end to said carriage to rotate about a movable axis, said platen being open at its other end, and paper holding means for rotatably supporting and centering said platen.

24. In a machine of the character described, a carriage having an inwardly deflected portion at one end, a platen journaled in and extending over and around said inwardly deflected portion, and linespacing mechanism including a line-spacin journaled within the end of sai platen.

25. In a machine of the character described, a carriage having an inwardly deflected portion at one end, a platen journaled in and extending around said inwardly deflected portion, and line-spacing mechanism including a line-spacing lever journaled within the "end of said platen, said inwardly deflected portion of said carriage being broken away on one side to accommodate a portion of said line-spacing mechanism which connects said lever to said platen. i

26. In a machine of the character Hescribed, a carriage having an inwardly deflected portion at one end, a platen journaled in and extending around said inwardly deflected portion, and linespacing mechanism including a line-spacing lever journaled within the end of said platen, said inwardly deflected portion of said car- 'riage being broken away on one side to accommodate a portion of said line-spacing mechanism which connects said lever to said platen, said line-spacing lever being provided with a radially extending portion within the end of said platen and an offset radially extending portion projecting beyond the periphery of said platen.

27. In a machine of the character described, a platen provided with a journal disposed inside of one end thereof, a carriage having a bearin for said journal disposed inside that en of the platen and a line-spacing lever provided with a hub por-' tion journaled within said end of the platen and provided with operating connections with said platen within said end thereof.

28 In a machine of the character de-" scribed, a platen provided with a journal disposed inside of one end thereof, a carriage having a bearing for said journal disposed inside that end of the platen and a line-spacing lever provided with a hub portion journaled within said end of the platen and provided with o crating connections with said platen within said end thereof, said carriage being provided with an end Wall deflected inwardly into said end of the platen and having a portion thereof broken away around the operating connections between said line-spacing lever and platen.

'29. In a typewriting machine, a carriage, a bracket, a platen journaled at one end in said bracket, ratchet mechanism within the journaled end of said platen for imparting line-spacing movements thereto, and a linespacing lever havin a portion thereof disposed within the e of said platen.

' 30. In a typewriting machine, a carriage, a bracket carried thereby, a platen journaled at one end in said bracket, said bracket having a wall transverse to the axis of said platen, ratchet mechanism disposed within the journaled end of said platen and between the end planes, of said platen, and a line-spacing lever comprising a portion operatably connected to said ratchet mechanism and disposed within and between the ends of said platen and another portion projecting radially and in line with the transverse wall of said bracket.

. 31. ,In a ypewriter, a carriage, provided with a transversely extending portlon adjacent one end and with an extension to said portion displaced inwardly with respect to said portion, a platen journaled at one end in said extension, and line-spacing mechanism disposed between said extension and the outer face of the said transversely extending portion.

32. In a typewriter, a carriage, provided with a transversely extending portion adjacent one end and with an extension to said, portion displaced inwardly with respect to said portion, a platen journaled at one end in sa1d extension, and line-spacing mechanism disposed between said extension and the outer face of said transversely extending portion, said line-spacing mechanism including a lever arm projecting transversely to said platen and in line with said transversely extending portion.

33. In a machine of the character described, a carriage provided with an end wall, a platen, and a line-spacing lever extending beyond the periphery of said platen and substantially flush with said end wall.

'34. In a typewriting machine, a carriage provided at one end with a transverse wall,

a platen journaledin said wall, and linespacing mechanism includin a line-spacing lever having a portion exten ing beyond the o e I e bearing and line-spacing mechamsm-mcludperiphery of said platen and substantially flush with said transverse wall.

35. In a typewriting machine, a carriage I having at one end. a transversely arranged portion provided with a bearing extending.

inwardly from a plane adjacent to the end of said platen, a platen journaled in said ing a hue-spacing lever having a portion extendingbeyond the outer perlphery of said copiel of this patent may be obtained for are cents each, by addressing the commissioner Washington, D. 0.

spacing mechanism.

37; In a machine of the character described, a carriage provided with a transverse end wall, a platen journaled in said carriage, and a line-spacing lever having a portion thereof adjacent to the periphery of saig platen, arranged flush with said end wa CHARLES w. BARNABY;

of Patents, 

